| #!/usr/bin/make |
| #^^^^ help emacs select makefile mode |
| # |
| # This is a sub-make for building a standalone wasmfs-based |
| # sqlite3.wasm. It is intended to be "include"d from the main |
| # GNUMakefile. |
| ######################################################################## |
| MAKEFILE.wasmfs := $(lastword $(MAKEFILE_LIST)) |
| # ensure that the following message starts on line 10 or higher for proper |
| # $(warning) alignment! |
| ifneq (1,$(MAKING_CLEAN)) |
| $(warning !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!) |
| $(warning !! The WASMFS build is not well-supported. WASMFS is a proverbial) |
| $(warning !! moving target, sometimes changing in incompatible ways between) |
| $(warning !! Emscripten versions. This build is provided for adventurous folks) |
| $(warning !! and is not a supported deliverable of the SQLite project.) |
| $(warning !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!) |
| endif |
| |
| sqlite3-wasmfs.js := $(dir.wasmfs)/sqlite3-wasmfs.js |
| sqlite3-wasmfs.wasm := $(dir.wasmfs)/sqlite3-wasmfs.wasm |
| |
| ######################################################################## |
| # emcc flags for .c/.o. |
| cflags.sqlite3-wasmfs := |
| cflags.sqlite3-wasmfs += -std=c99 -fPIC |
| cflags.sqlite3-wasmfs += -pthread |
| cflags.sqlite3-wasmfs += -DSQLITE_ENABLE_WASMFS |
| |
| ######################################################################## |
| # emcc flags specific to building the final .js/.wasm file... |
| emcc.flags.sqlite3-wasmfs := |
| emcc.flags.sqlite3-wasmfs += \ |
| -sEXPORTED_RUNTIME_METHODS=wasmMemory |
| # wasmMemory ==> for -sIMPORTED_MEMORY |
| # Some version of emcc between 3.1.60-ish(?) and 3.1.62 deprecated the |
| # use of (allocateUTF8OnStack,stringToUTF8OnStack). Earlier emcc |
| # versions will fail to build without those in the |
| # EXPORTED_RUNTIME_METHODS list. |
| emcc.flags.sqlite3-wasmfs += -sUSE_CLOSURE_COMPILER=0 |
| emcc.flags.sqlite3-wasmfs += -Wno-limited-postlink-optimizations |
| # ^^^^^ emcc likes to warn when we have "limited optimizations" via the -g3 flag. |
| emcc.flags.sqlite3-wasmfs += -sMEMORY64=0 |
| emcc.flags.sqlite3-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128) |
| # ^^^^ 64MB is not enough for WASMFS/OPFS test runs using batch-runner.js |
| sqlite3-wasmfs.fsflags := -pthread -sWASMFS \ |
| -sPTHREAD_POOL_SIZE=1 \ |
| -sERROR_ON_UNDEFINED_SYMBOLS=0 -sLLD_REPORT_UNDEFINED |
| # ^^^^^ why undefined symbols are necessary for the wasmfs build is anyone's guess. |
| emcc.flags.sqlite3-wasmfs += $(sqlite3-wasmfs.fsflags) |
| emcc.flags.sqlite3-wasmfs += -sALLOW_MEMORY_GROWTH=0 |
| #^^^ using ALLOW_MEMORY_GROWTH produces a warning from emcc: |
| # USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code slowly, |
| # see https://github.com/WebAssembly/design/issues/1271 [-Wpthreads-mem-growth] |
| # And, indeed, it runs slowly if memory is permitted to grow. |
| #emcc.flags.sqlite3-wasmfs.vanilla := |
| #emcc.flags.sqlite3-wasmfs.esm := -sEXPORT_ES6 -sUSE_ES6_IMPORT_META |
| all: $(sqlite3-wasmfs.mjs) |
| $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(MAKEFILE.wasmfs) |
| ######################################################################## |
| # Build quirk: we cannot build BOTH .js and .mjs with our current |
| # build infrastructure because the supplemental *.worker.js files get |
| # generated with the name of the main module file |
| # ($(sqlite3-wasmfs.{js,mjs})) hard-coded in them. Thus the last one |
| # to get built gets the *.worker.js files mapped to it. In order to |
| # build both modes they would need to have distinct base names or |
| # output directories. "The problem" with giving them distinct base |
| # names is that it means that the corresponding .wasm file is also |
| # built/saved multiple times. It is likely that anyone wanting to use |
| # WASMFS will want an ES6 module, so that's what we build here. |
| wasmfs.build.ext := mjs |
| $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(SOAP.js.bld) |
| ifeq (js,$(wasmfs.build.ext)) |
| $(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.js) |
| wasmfs: $(sqlite3-wasmfs.js) |
| else |
| $(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.mjs) |
| wasmfs: $(sqlite3-wasmfs.mjs) |
| endif |
| |
| ######################################################################## |
| # speedtest1 for wasmfs. |
| speedtest1-wasmfs.mjs := $(dir.wasmfs)/speedtest1-wasmfs.mjs |
| speedtest1-wasmfs.wasm := $(subst .mjs,.wasm,$(speedtest1-wasmfs.mjs)) |
| emcc.flags.speedtest1-wasmfs := $(sqlite3-wasmfs.fsflags) |
| emcc.flags.speedtest1-wasmfs += $(SQLITE_OPT) |
| emcc.flags.speedtest1-wasmfs += -sALLOW_MEMORY_GROWTH=0 |
| emcc.flags.speedtest1-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128) |
| #$(eval $(call call-make-pre-js,speedtest1-wasmfs,ems)) |
| $(speedtest1-wasmfs.mjs): $(speedtest1.cfiles) $(sqlite3-wasmfs.js) \ |
| $(MAKEFILE) $(MAKEFILE.wasmfs) \ |
| $(pre-post-sqlite3-wasmfs-esm.deps) \ |
| $(EXPORTED_FUNCTIONS.speedtest1) |
| @echo "Building $@ ..." |
| $(emcc.bin) \ |
| $(pre-post-sqlite3-wasmfs-esm.flags) \ |
| $(cflags.common) \ |
| $(cflags.sqlite3-wasmfs) \ |
| $(emcc.speedtest1.common) \ |
| $(emcc.flags.speedtest1-vanilla) \ |
| $(emcc.flags.sqlite3-wasmfs) \ |
| $(emcc.flags.speedtest1-wasmfs) \ |
| -o $@ $(speedtest1.cfiles) -lm |
| @$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,1,1) |
| $(maybe-wasm-strip) $(speedtest1-wasmfs.wasm) |
| chmod -x $(speedtest1-wasmfs.wasm) |
| ls -la $@ $(speedtest1-wasmfs.wasm) |
| |
| wasmfs: $(speedtest1-wasmfs.mjs) |
| # end speedtest1.js |
| ######################################################################## |
